CN213977920U - Long-life aluminium negative plate - Google Patents

Long-life aluminium negative plate Download PDF

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Publication number
CN213977920U
CN213977920U CN202023064304.4U CN202023064304U CN213977920U CN 213977920 U CN213977920 U CN 213977920U CN 202023064304 U CN202023064304 U CN 202023064304U CN 213977920 U CN213977920 U CN 213977920U
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China
Prior art keywords
layer
aluminum
ceramic membrane
plate
aluminium
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CN202023064304.4U
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Chinese (zh)
Inventor
郭忠诚
相元杰
朱盘龙
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Jinning Science And Technology Hengda Technology Co ltd
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Jinning Science And Technology Hengda Technology Co ltd
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Abstract

The utility model relates to a long-life aluminium negative plate belongs to non ferrous metal hydrometallurgy technical field. The utility model discloses long-life aluminium negative plate includes that aluminium roof beam, copper aluminium are compound leads electrical head and aluminum plate, and the end of the welding at aluminium roof beam is led electrical head to the copper aluminium complex, and the top welding of aluminum plate is in aluminium roof beam bottom, and the outer normal position growth of aluminium roof beam has Al2O3Ceramic membrane,Al2O3Ceramic membraneThe outer layer of the coating is coated with an anticorrosive coating layer; al grows in situ in the area above the liquid level line on the top of the aluminum plate2O3Ceramic membrane,Al2O3Ceramic membraneCoated with an epoxy layerLayer of epoxy resinThe outer layer is fixed with a PP plastic layer(ii) a Al grows in situ on the edges of the two sides of the aluminum plate2O3Ceramic membrane,Al2O3Ceramic membraneCoated with an epoxy layerLayer of epoxy resinThe outer layer is injected with a PP plastic layer. The utility model disclosesThe anti-corrosion layer can effectively prevent the corrosion of fluorine and chlorine ions in the electrolyte to the aluminum cathode.

Description

Long-life aluminium negative plate
Technical Field
The utility model relates to a long-life aluminium negative plate belongs to non ferrous metal hydrometallurgy technical field.
Background
At present, about 90% of zinc is extracted by adopting a hydrometallurgy technology, and an anode plate (lead-based alloy material) and a cathode plate (aluminum plate) are indispensable electrode plates in the zinc electrodeposition process. The conductivity of metal aluminum is second to copper, and the standard electrode potential is lower than zinc, so that a pure aluminum plate is generally adopted as a cathode plate surface, an aluminum alloy section is adopted as a conductive beam, a copper-aluminum composite material is adopted as a conductive head, and the aluminum plate, the aluminum conductive beam and the copper-aluminum composite conductive head are welded together by adopting a friction stir welding technology to form an aluminum cathode plate. In the actual production of zinc electrodeposition, an aluminum cathode is influenced by corrosion of acid mist, fluorine and chlorine ions in electrolyte and the like, and the aluminum cathode plate is easy to have the phenomena of corrosion fracture at a liquid level line part and corrosion thinning of a side edge and finally cannot be used. The replacement of the aluminum cathode plate increases the production cost of the metallurgical enterprise.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to among the prior art aluminium negative plate easily appear corroding fracture, side corrosion attenuation scheduling problem at liquid level line position, provide a long-life aluminium negative plate, the utility model discloses an area and aluminum plate both sides edge normal position growth Al above aluminium roof beam outside, aluminum plate liquid level line2O3The ceramic membrane can effectively prevent the corrosion of fluorine and chlorine ions in the electrolyte to the aluminum cathode, and prolong the service life of the aluminum cathode.
The long-life aluminum cathode plate comprises an aluminum beam 1, a copper-aluminum composite conductive head 2 and an aluminum plate 3, wherein the copper-aluminum composite conductive head 2 is welded at the end of the aluminum beam 1, the top end of the aluminum plate 3 is welded at the bottom end of the aluminum beam 1, and the aluminum beam 1 is externally provided with (in-situ growth) Al2O3Ceramic film I, Al2O3The outer layer of the ceramic membrane I is coated with an anticorrosive coating layer, and Al is arranged (grown in situ) in the area above the liquid level line at the top of the aluminum plate layer 32O3Ceramic film II, Al2O3The outer coating of ceramic membrane II has epoxy layer I, and epoxy layer I is outer to be moulded plastics and has been had PP plastic layer I, 3 both sides edges normal position growth Al of aluminium sheet layer2O3Ceramic film III, Al2O3The outer coating of ceramic membrane III is provided with epoxy layer II, and epoxy layer II is outer to be moulded plastics and has been had PP plastic layer II.
Further, said Al2O3The thickness of the ceramic film I is 20-50 mu m, and Al2O3The thickness of the ceramic film II is20-50μm,Al2O3The thickness of the ceramic membrane III is 20-50 μm.
Further, said Al2O3The height of the ceramic membrane II is 80-140 mm.
Preferably, the anticorrosive coating layer is a commercially available three-way primer or four-way primer, and the thickness of the anticorrosive coating layer is 20-30 μm;
preferably, the thickness of the epoxy resin layer I is 30-40 μm, the thickness of the epoxy resin layer II is 20-30 μm, the thickness of the PP plastic layer I is 2-3mm, and the thickness of the PP plastic layer II is 16-20 mm.
The utility model has the advantages that:
the utility model discloses an area and aluminum plate both sides edge normal position growth Al above aluminum beam outside, aluminum plate liquid level line2O3The ceramic membrane can effectively prevent fluorine and chlorine ions in the electrolyte from corroding the aluminum cathode, and the service life of the aluminum cathode plate can be prolonged by 30-60% of that of a commercial product.
Drawings
FIG. 1 is a schematic diagram of a long-life aluminum cathode plate structure;
FIG. 2 is a cross-sectional view taken at A;
FIG. 3 is a cross-sectional view at B;
FIG. 4 is a sectional view taken at C
In the figure, 1-aluminum beam, 2-copper aluminum composite conductive head and 3-aluminum plate.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, but the scope of the present invention is not limited to the above description.
Example 1: the long-life aluminum cathode plate (see fig. 1-4) comprises an aluminum beam 1, a copper-aluminum composite conductive head 2 and an aluminum plate 3, wherein the copper-aluminum composite conductive head 2 is welded at the end of the aluminum beam 1, the top end of the aluminum plate 3 is welded at the bottom end of the aluminum beam 1, and Al grows on the outer layer of the aluminum beam 1 in situ2O3Ceramic film I, Al2O3The outer layer of the ceramic membrane I is coated with an anticorrosive coating layer, and Al grows in situ in the area above the liquid level line on the top of the aluminum plate 32O3Ceramic film II, Al2O3The outer layer of the ceramic membrane II is coated with an epoxy resin layer IThe outer layer of the epoxy resin layer I is injected with a PP plastic layer I, and the edges of two sides of the aluminum plate 3 grow Al in situ2O3Ceramic film III, Al2O3The outer layer of the ceramic membrane III is coated with an epoxy resin layer II, and the outer layer of the epoxy resin layer II is injected with a PP plastic layer II;
the preparation method of the long-life aluminum cathode plate comprises the following steps: welding a copper-aluminum composite conductive head at the end of an aluminum beam, welding an aluminum plate at the bottom of the aluminum beam, roughening the area above a liquid level line of the aluminum plate, the edges of two sides of the aluminum plate and the outer surface of the aluminum beam, and carrying out anodic oxidation treatment and in-situ growth to obtain Al2O3Ceramic film of Al on the outer surface of the aluminum beam2O3Coating acid-resistant and wear-resistant resin paint on the ceramic membrane to form aluminum base/Al2O3Coating multifunctional anticorrosive coating; al on the area above the liquid level line of the aluminum plate and on the two side edges of the aluminum plate2O3Coating an epoxy resin coating on the surface of the ceramic membrane, and then injecting PP plastic on the epoxy resin coating to form the aluminum base/Al base2O3coating/PP plastic multifunctional anticorrosive coating.
Example 2: the long-life aluminum cathode plate of the embodiment has a structure basically identical to that of the long-life aluminum cathode plate of the embodiment 1, except that: al (Al)2O3The thickness of the ceramic film I is 20-30 mu m, and Al2O3The thickness of the ceramic film II is 20-30 mu m, and Al2O3The thickness of the ceramic membrane III is 20-30 μm; al (Al)2O3The height of the ceramic membrane II is 80-140 mm.
Example 3: the long-life aluminum cathode plate of this embodiment is basically the same as the long-life aluminum cathode plate of embodiment 2 in structure, except that: the thickness of the anti-corrosion coating layer is 10-15 mu m, the thickness of the epoxy resin layer I is 20-25 mu m, the thickness of the epoxy resin layer II is 25-30 mu m, the thickness of the PP plastic layer I is 3.5mm, and the thickness of the PP plastic layer II is 18 mm.
The present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit and scope of the present invention by those skilled in the art.

Claims (3)

1. The utility model provides a long-life aluminium negative plate which characterized in that: the aluminum-copper composite conductive head comprises an aluminum beam (1), a copper-aluminum composite conductive head (2) and an aluminum plate (3), wherein the copper-aluminum composite conductive head (2) is welded at the end of the aluminum beam (1), the top end of the aluminum plate (3) is welded at the bottom end of the aluminum beam (1), and Al is arranged on the outer layer of the aluminum beam (1)2O3Ceramic film I, Al2O3An anticorrosive coating layer is coated on the outer layer of the ceramic membrane I; al is arranged in the area above the liquid level line at the top of the aluminum plate (3)2O3Ceramic film II, Al2O3An epoxy resin layer I is coated on the outer layer of the ceramic membrane II, and a PP plastic layer I is injected on the outer layer of the epoxy resin layer I; al grows in situ on the edges of the two sides of the aluminum plate (3)2O3Ceramic film III, Al2O3The outer coating of ceramic membrane III is provided with epoxy layer II, and epoxy layer II is outer to be moulded plastics and has been had PP plastic layer II.
2. The long life aluminum cathode plate of claim 1 wherein: al (Al)2O3The thickness of the ceramic film I is 20-50 mu m, and Al2O3The thickness of the ceramic film II is 20-50 mu m, and Al2O3The thickness of the ceramic membrane III is 20-50 μm.
3. The long life aluminum cathode plate of claim 1 wherein: al (Al)2O3The height of the ceramic membrane II is 80-140 mm.
CN202023064304.4U 2020-12-18 2020-12-18 Long-life aluminium negative plate Active CN213977920U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202023064304.4U CN213977920U (en) 2020-12-18 2020-12-18 Long-life aluminium negative plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202023064304.4U CN213977920U (en) 2020-12-18 2020-12-18 Long-life aluminium negative plate

Publications (1)

Publication Number Publication Date
CN213977920U true CN213977920U (en) 2021-08-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202023064304.4U Active CN213977920U (en) 2020-12-18 2020-12-18 Long-life aluminium negative plate

Country Status (1)

Country Link
CN (1) CN213977920U (en)

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